Grace Douglas and Adam Elliot grew up side by side in remote rural Scotland. Recently married, they are full of hope for the future - until their young lives are cut short by a brutal murder. The Douglases and Elliots are fiercely different families, split by old rifts but forced together in rage and grief. When the man who killed Grace and Adam crashes into their lives, they face a choice that will have dark consequences for all of them. As they stumble down the path they've chosen, truth and morality become obscured. The death of Grace and Adam is just the start of this dangerous journey, one that will twist and turn until its devastating end.